public void TestAutoSizeColumn()
{
HSSFWorkbook wb = HSSFTestDataSamples.OpenSampleWorkbook("43902.xls");
String sheetName = "my sheet";
HSSFSheet sheet = (HSSFSheet)wb.GetSheet(sheetName);
// Can't use literal numbers for column sizes, as
// will come out with different values on different
// machines based on the fonts available.
// So, we use ranges, which are pretty large, but
// thankfully don't overlap!
int minWithRow1And2 = 6400;
int maxWithRow1And2 = 7800;
int minWithRow1Only = 2750;
int maxWithRow1Only = 3300;
// autoSize the first column and check its size before the merged region (1,0,1,1) is set:
// it has to be based on the 2nd row width
sheet.AutoSizeColumn(0);
Assert.IsTrue(sheet.GetColumnWidth(0) >= minWithRow1And2, "Column autosized with only one row: wrong width");
Assert.IsTrue(sheet.GetColumnWidth(0) <= maxWithRow1And2, "Column autosized with only one row: wrong width");
//Create a region over the 2nd row and auto size the first column
sheet.AddMergedRegion(new CellRangeAddress(1, 1, 0, 1));
sheet.AutoSizeColumn(0);
HSSFWorkbook wb2 = HSSFTestDataSamples.WriteOutAndReadBack(wb);
// Check that the autoSized column width has ignored the 2nd row
// because it is included in a merged region (Excel like behavior)
NPOI.SS.UserModel.ISheet sheet2 = wb2.GetSheet(sheetName);
Assert.IsTrue(sheet2.GetColumnWidth(0) >= minWithRow1Only);
Assert.IsTrue(sheet2.GetColumnWidth(0) <= maxWithRow1Only);
// Remove the 2nd row merged region and Check that the 2nd row value is used to the AutoSizeColumn width
sheet2.RemoveMergedRegion(1);
sheet2.AutoSizeColumn(0);
HSSFWorkbook wb3 = HSSFTestDataSamples.WriteOutAndReadBack(wb2);
NPOI.SS.UserModel.ISheet sheet3 = wb3.GetSheet(sheetName);
Assert.IsTrue(sheet3.GetColumnWidth(0) >= minWithRow1And2);
Assert.IsTrue(sheet3.GetColumnWidth(0) <= maxWithRow1And2);
}